kristin welker is at the white house for us. what is the latest in these developments? >> reporter: alec, good afternoon to you. fbi officials confirm that special agents did arrest 41-year-old everett dutschke this afternoon, and authorities in tupelo, mississippi, say that the arrest is in connection with those ricin-laced letters that were addressed to president obama and members of congress. at this point in time though, no charges have been filed and no word on what specific charges will be filed. he is being held in a detention center expected to be arraigned on monday. now, his home was actually investigated by authorities tuesday and wednesday. so reporters have been outside of his house on a number of different days this week, alex. our local affiliate actually interviewed him earlier this week. take a listen to what dutschke had to say. >> i had absolutely nothing to do with those letters and the person that was -- her defense attorney or his defense attorney said -- steered them in my direction because i was probably an easy target. >> now, you heard him ment